Will goldfish eat other fish that are small ? We have 2 large golds, about 6-8 inches in length who (not my idea) live in our 55g community tank. We are moving them to a friends pond in about a week (thank God!!). Anywho we acquired some fish over a month ago & we finally put them in the 55g. Well a few went missing only days later. They were real young cardinal tetras, a couple of the tiny guppies, (no big deal there since he had about 50 to begin with when I moved in), & a few of our zebra danios who were also real young & small. I was just wondering if gold's will eat other fish. I can't wait to get rid of them though.

I don't know about the eating the other fish, I would imagine so. But, cardinal tetras and guppies are tropicals whereas goldies are not. They have very different requirements and should not be housed together, even for a short period of time. Unless your goldies are kept at tropical temperatures, your little fish probably succumbed to too cold water.

Like the others said, if it fits in their mouths fish will eat it, be it food or other fish.
I would like to disagree with Sprite42 with the Goldfish cant live in warm water. Goldfish are called Cold water fish because they CAN live in freezing water not because they have to. They can live perfectly normal healthy lives in warm tropical water, mind you I wouldnt let their temp go above 80 degrees but then again I probally wouldnt have any other fish have that warm of water either. Im just getting tired of people saying that Goldfish cannot live in a tropical tank because they are cold water fish. My Goldfish tank is kept at room temperature of about 75-78 degrees like my 2 tropical tanks and they do fine in it. Sorry for the rant and im sorry if it sounds rude but I just want people to know that goldfish do not have to live in cold water.
Niki.

Like the others said, if it fits in their mouths fish will eat it, be it food or other fish.
I would like to disagree with Sprite42 with the Goldfish cant live in warm water. Goldfish are called Cold water fish because they CAN live in freezing water not because they have to. They can live perfectly normal healthy lives in warm tropical water, mind you I wouldnt let their temp go above 80 degrees but then again I probally wouldnt have any other fish have that warm of water either. Im just getting tired of people saying that Goldfish cannot live in a tropical tank because they are cold water fish. My Goldfish tank is kept at room temperature of about 75-78 degrees like my 2 tropical tanks and they do fine in it. Sorry for the rant and im sorry if it sounds rude but I just want people to know that goldfish do not have to live in cold water.
Niki.

Ewwww!!! When I was younger (like 8 years old or younger) I had 2 goldfish in what I think was a 2g bowl that had a airstone in it and the pump was to strong for the bowl and one time when I got back from out of town one of the goldfish had eaten the other one and then it died as I guess it choked on the goldfish as its the other goldfish's tail was sticking out of its mouth.

I would not have any fish that can fit into their mouth. I was afraid that some of the minnows that I had the 2 goldfish would eat them. In the end, they never did. Mine were about 4-4.5 inches long. They got that big in three months in my 100+ gal pond.